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Long Term Debt (Long-term Debt) (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |
Fair Market Value Adjustments to Debt | $ 22 | $ 31
Debt issuance costs | (113) | (98)
Amount due within one year | (1,119) | (741)
Long Term Debt, Adjustments | (1,210) | (808)
Long-term Debt and Capital Lease Obligations | 14,292 | 13,140
Emera Inc |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | $ 2,701 | 2,363
Emera Inc | Bankers Acceptances, LIBOR Loans [Member] |  |
Debt Instrument [Line Items] |  |
Variable rate | Variable |
Long-term Debt, Gross | $ 339 | $ 133
Emera Inc | Bankers Acceptances, LIBOR Loans [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2020 |
Emera Inc | Unsecured fixed rate notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 3.50% | 3.50%
Long-term Debt, Gross | $ 725 | $ 725
Emera Inc | Unsecured fixed rate notes [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2019 |
Emera Inc | Unsecured fixed rate notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2023 |
Emera Inc | Fixed to floating subordinated notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 6.75% |
Long-term Debt, Gross | $ 1,637 | $ 1,505
Emera Inc | Fixed to floating subordinated notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2076 |
Affiliated Entity [Member] | Fixed to floating subordinated notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate |  | 6.75%
Emera US Finance LP [Member] | Unsecured senior notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 3.60% | 3.60%
Long-term Debt, Gross | $ 4,434 | $ 4,077
Emera US Finance LP [Member] | Unsecured senior notes [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2019 |
Emera US Finance LP [Member] | Unsecured senior notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2046 |
TECO Finance, Inc. [Member] |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | $ 409 | 690
TECO Finance, Inc. [Member] | Variable rate notes [Member] |  |
Debt Instrument [Line Items] |  |
Variable rate | Variable |
Long-term Debt, Gross | $ 0 | $ 314
TECO Finance, Inc. [Member] | Variable rate notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2018 |
TECO Finance, Inc. [Member] | Fixed rate notes and bonds [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 5.15% | 5.15%
Long-term Debt, Gross | $ 409 | $ 376
TECO Finance, Inc. [Member] | Fixed rate notes and bonds [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Jan. 01, 2020 |
Tampa Electric Division [Member] | Fixed rate notes and bonds [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 4.64% | 4.75%
Long-term Debt, Gross | $ 3,126 | $ 2,410
Tampa Electric Division [Member] | Fixed rate notes and bonds [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2021 |
Tampa Electric Division [Member] | Fixed rate notes and bonds [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2049 |
Peoples Gas System Division [Member] | Fixed rate notes and bonds [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 4.66% | 5.06%
Long-term Debt, Gross | $ 425 | $ 328
Peoples Gas System Division [Member] | Fixed rate notes and bonds [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2021 |
Peoples Gas System Division [Member] | Fixed rate notes and bonds [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2049 |
New Mexico Gas Company [Member] | Fixed rate notes and bonds [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 4.53% | 4.53%
Long-term Debt, Gross | $ 368 | $ 339
New Mexico Gas Company [Member] | Fixed rate notes and bonds [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2021 |
New Mexico Gas Company [Member] | Fixed rate notes and bonds [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2026 |
New Mexico Gas Incorporate [Member] | Fixed rate notes and bonds [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 3.41% | 3.41%
Long-term Debt, Gross | $ 273 | $ 251
New Mexico Gas Incorporate [Member] | Fixed rate notes and bonds [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2019 |
New Mexico Gas Incorporate [Member] | Fixed rate notes and bonds [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2024 |
Nova Scotia Power Inc. [Member] |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | $ 2,576 | 2,424
Nova Scotia Power Inc. [Member] | Discount notes [Member] |  |
Debt Instrument [Line Items] |  |
Variable rate | Variable |
Long-term Debt, Gross | $ 516 | $ 364
Nova Scotia Power Inc. [Member] | Discount notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Jan. 01, 2023 |
Nova Scotia Power Inc. [Member] | Medium-term Notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 5.73% | 5.73%
Long-term Debt, Gross | $ 1,965 | $ 1,965
Nova Scotia Power Inc. [Member] | Medium-term Notes [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2025 |
Nova Scotia Power Inc. [Member] | Medium-term Notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2097 |
Nova Scotia Power Inc. [Member] | Fixed rate debenture [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 9.75% | 9.75%
Long-term Debt, Gross | $ 95 | $ 95
Nova Scotia Power Inc. [Member] | Fixed rate debenture [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2019 |
Emera Maine [Member] |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | $ 478 | 408
Emera Maine [Member] | LIBOR loans and demand loans [Member] |  |
Debt Instrument [Line Items] |  |
Variable rate | Variable |
Long-term Debt, Gross | $ 28 | $ 51
Emera Maine [Member] | LIBOR loans and demand loans [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Jan. 01, 2023 |
Emera Maine [Member] | Secured fixed rate mortgage bonds [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 9.74% | 9.74%
Long-term Debt, Gross | $ 68 | $ 63
Emera Maine [Member] | Secured fixed rate mortgage bonds [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2020 |
Emera Maine [Member] | Secured fixed rate mortgage bonds [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2022 |
Emera Maine [Member] | Unsecured senior fixed rate notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 4.23% | 4.15%
Long-term Debt, Gross | $ 382 | $ 294
Emera Maine [Member] | Unsecured senior fixed rate notes [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2022 |
Emera Maine [Member] | Unsecured senior fixed rate notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2048 |
Emera Brunswick Pipeline Company Limited [Member] | Senior secured credit facility [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 3.08% | 3.08%
Long-term Debt, Gross | $ 248 | $ 248
Debt Instrument, Maturity Date | Jan. 01, 2022 |
Grand Bahama Power Company Limited [Member] |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | $ 182 | $ 166
Grand Bahama Power Company Limited [Member] | Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 7.07% | 7.07%
Long-term Debt, Gross | $ 68 | $ 88
Grand Bahama Power Company Limited [Member] | Senior Notes [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2020 |
Grand Bahama Power Company Limited [Member] | Senior Notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2023 |
Grand Bahama Power Company Limited [Member] | Unsecured amortizing fixed rate notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 3.83% | 3.77%
Long-term Debt, Gross | $ 114 | $ 78
Grand Bahama Power Company Limited [Member] | Unsecured amortizing fixed rate notes [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2021 |
Grand Bahama Power Company Limited [Member] | Unsecured amortizing fixed rate notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2022 |
The Barbados Light & Power Company Limited And Emera Caribbean Incorporated [Member] |  |
Debt Instrument [Line Items] |  |
Long-term Debt, Gross | $ 258 | 244
The Barbados Light & Power Company Limited And Emera Caribbean Incorporated [Member] | Secured senior notes [Member] |  |
Debt Instrument [Line Items] |  |
Variable rate | Variable |
Long-term Debt, Gross | $ 159 | $ 168
The Barbados Light & Power Company Limited And Emera Caribbean Incorporated [Member] | Secured senior notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2021 |
The Barbados Light & Power Company Limited And Emera Caribbean Incorporated [Member] | Secured fixed rate senior notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 4.74% | 5.06%
Long-term Debt, Gross | $ 99 | $ 76
The Barbados Light & Power Company Limited And Emera Caribbean Incorporated [Member] | Secured fixed rate senior notes [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2020 |
The Barbados Light & Power Company Limited And Emera Caribbean Incorporated [Member] | Secured fixed rate senior notes [Member] | Maximum [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Maturity Date | Dec. 31, 2035 |
Icd Utilities Limited [Member] | Fixed rate notes and bonds [Member] |  |
Debt Instrument [Line Items] |  |
Weighted average interest rate | 4.00% | 0.00%
Long-term Debt, Gross | $ 24 | $ 0

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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